Preheat the oven to 450 F
Cut the roma tomatoes in quarters and remove the seeds.
Place the tomatoes, quartered onion, garlic cloves, and bell pepper in a baking sheet. Season with salt, pepper, and Italian seasoning. Drizzle olive oil over the veggies and roast for 25 mins, stirring halfway.
5 minutes before the baking time is over, turn the oven to broil and cook until they are a bit charred at the edges.
Bring the chicken broth to a boil in a medium-sized pot and add the roasted veggies.
Using a hand blender, blend until smooth. You can also use a regular blender.
Add heavy cream, season with salt and pepper, and cook until heated through (do not boil the soup). Serve with additional cream if desired, or chopped fresh basil.